x x\,x is directly proportional to the cube of y y\,y
When x=16x = 16x=16, y=0.5y = 0.5y=0.5
Find the exact value of yyy, giving your answer as a fraction, when x=54x = 54x=54
164 exam-style questions on OCR GCSE Maths Direct and Inverse Proportion. Each one has a worked solution and a mark scheme showing where the marks go.